Regulator.



N0. 798,826. PATENTBD SEPT. 5, 1905. A. F. PIBPER. REGULATOR.

APPLICATION mum we. no. 1003. Bnnnwnn In. 3, 1005.

UNITED STATES PATENT OFFICE.

ALPHONSE F. PIEPER, OF ROCHESTER, NElV YORK.

REGULATOR.

Specification of Letters Patent.

Patented Sept. 5, 1905.

To all whom, it may concern.-

Be it known that I, ALPHoNsE F. Prnrnn, of Rochester, in the county ofMonroe and State of New York, have invented certain new andnsei'ullmprovements in Regulators; and I do hereby declare the followingto be a full, clear, and exact description of the same, reference beinghad to the accompanying drawing, forming a part of this specification,and to the reference-numerals marked therein.

My present invention relates to that class of devices known asregulators or controllers for electrically-operated apparatus, andparticularly to such as are operated by alternating currents; and it hasfor its object to provide a device employing an inductive winding havingvarying turns which is so constructed that as the circuit vistransferred from one part of the winding to another the induced currentand the consequent disturbances created thereby will be eliminated.

To this and other ends my invention consists in certain features ofnovelty and advantage to be hereinafter more fully described, andpointed out in the claims hereto annexed.

The accompanying drawing is a diagrammatic illustration of a regulatorconstructed in accordance with my invention, showing it employed inconnection with an electric motor.

While my invention comprehends a device adapted for regulating electriccurrents in any form of electrical apparatus to control its operation, Ihave illustrated its construction and operation in connection with anelectric motor adapted particularly to be operated by an alternatingcurrent.

The motor to which I have shown the regulator applied is one of thedirect-current type, having the field-magnet 1 provided with thepole-pieces 2 and the windings 3. The armature is indicated by 4 andembodies the armature-coils 5, which are connected at intervals with thesections of the commutator 6. The commutator-brushes 7 and 7 cooperatewith the commutator and connect the field-coils, which are in theneutral point of the magnet, as will be understood. The source ofcurrent for supplying the motor is a transformer, indicated by 8 andcontaining the primary coil 9 in the main circuit or source of currentsupply, and the secondary coil 10, which is connected to one of thefield-coils by a conductor 11 and to the brush 7 by a conductor 12. Asthis motor is connected in series a conductor 13 leads from the otherbrush 7 to the field-coil 3, as shown.

The regulating device embodies a plurality of eores-in the presentinstance four being shown and indicated by 15, 16, 17, and 18 which, ifit is desired, may be a ring or otherwise formed to provide aclosed-magnet circuit. Each core is provided with a separate winding 15,16, 17, and 18, and these windings vary in the number of turns to giveeach of them a different inductive force. \Vhen the regulator isemployed in connection with the motor before described, it is arrangedso that one or another of the inductive windings is arranged in acircuit forming a shunt with the commutator-brushes 7 7,which isaccomplished by connecting all of said windings to a conductor 20,forming one side of said circuit and connected to the wire 13, leadingto the brush 7. circuit consists of a conductor 21,1eading from thebrush 7, embodying a movable switcharm or contact member 22, adapted tosuecessively engage with separate contact-points 23, 2st, 25, and 26,forming the terminals, respectively, of the several inductive windings15, 16, 17, and 18.

To vary the operation of the motor or other electrically-operatedapparatus, the contact member 22, engaging the point 26, places theinductive winding having the greater number of turns in the shunt. Bymoving, the member 22 toward the point 23 the operation of the appa'atus may be controlled as desired, as said member engages the othercontactpoints successively, bringing the other windings, of less turnsor having less inductive electromotive power, into the shunt, thusreducing the speed of the motor. \Vhen the switch reaches thecontact-point 27, the inductive windings are all cut out, and themotorarmature being short-circuited is brought immediately to a positionof rest.

This construction of the regulator is an advantageous one, as it enablesthe terminal contact-points of the several inductive windings to bearranged in proximity, so that the contact member 22 may engage onebefore it is moved out of contact with another, thereby preventing anybreak or interruption in the current flowing to the motor or otherapparatus, and the several windings being provided with separate coresthe diificulty experienced from the excessive sparking be- The otherside of the shunt-- tween the contact-points and the movable memberwhich occurs when said windings are arranged on the same core iseliminated.

I claim as my invention- 1. A regulator for electric currents consistingoi a plurality of inductive windings differing in induction wound ondilierent cores and means for closing a circuit through said windings.

2. A regulator for electric currents consisting of a plurality ofinductive windings dil fering in the number of turns wound on differentcores and means for closing a circuit through said windings.

3. A regulator for electric currents consisting of a plurality ofseparate cores, windings .of diflerent induction on the separate coresand means for closing a circuit through said windings.

i. The combination with an electric circuit, of a regulator embodying aplurality of inductive windings differing in induction and connected atone side of the circuit and means cooperating with the separatewindings, connected to the other sideo'l the circuit.

5. The combination with an electrical apparatus for alternating current,of a regulator arranged in the circuit and embodying a plurality ofinductive windings differing in induction wound on different cores andmeans for closing the circuit through said windings.

6. In combination in a motor for alternating currents field-windings,armature-coils, commutator and commutator-brushes, connected in series,a plurality of inductive windings differing in induction, a conductorconnecting one of the brushes with said windings and a separateconductor leading from the other brush and adapted to cooperate withsaid windings to close the circuit and form a shunt around said brushes.

7. In a regulator for electric apparatus, the combination with a circuitand a plurality of inductive windings wound on different cores, saidwindings being connected independently to one side of the circuit, ofcontacts for separate windings located in proximity to each other and acontact-linger arranged in the other side of the circuit and adapted toengage two contacts when moving from one contact to another.

ALPHONSE F. PIEPER. \Vitnesses:

Gr. ILL/inn Riou, HENRY \V. HALL.

